Young Adult To Adult - Tumblr Posts

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The sky was pitch black. Not a cloud in sight.

A full moon was shining over the countryside, and millions of stars shily outlined the Milky Way.

Only a few people were walking in the desert streets, returning home from a fun night.

The air was warm and still. The only constant sound were the ubiquitous calls of crickets and frogs raising from the grass.

It had been a very hot June, one of the hottest in the last decades. It was humanly impossible to step outdoors during the day. The temperature were bearable in the night only, when a sporadic, gentle breeze would occasionally blow.

Most of the windows were closed, but those who weren't lucky enough to own an air conditioner kept all their bedroom windows open. It was not the safest choice for sure, but the idea of a robbery was far better than enduring the pain of a sleepless night due to the heat.

Mattia kept his bedroom window open, too, even though his parents had told him to close it multiple times. A small fan was located right next to it, and the air current it generated directly whirled towards his bed, where he was quietly snoring.

The young man was sleeping supine, only wearing a pair of briefs. His lean, tonic body was beaded in sweat. It was not a bad thing, as it made the current feel much cooler than it actually was. However, it wasn't enough to allow a peaceful sleep, so he would occasionally toss and turn to reach the cooler parts of his sheets and pillow.

The white noise of the fan was the only thing that could be heard in the room. It was a relaxing, recurring sound that Mattia personally loved, and thought to be extremely useful to get to sleep. The atmosphere was chill and peaceful.

It was about 3 am when the quiet darkness was interrupted by a white flashlight for less than half a second.

A metallic sound, a hustle. In a split second, a slender, humanoid shadow had creeped inside Mattia's bedroom, and was now menacingly standing beside his bed.

It stayed still for a minute, eeriely staring at the young man.

He looked in good shape, he was a healthy candidate, the thing thought.

After all, they had observed him for a long time. Empirically, he was the best choice.

The being slowly bent over the sleeping human. It couldn't afford to wake him up.

It fidgeted with the device it was holding, some sort of weird, ball-shaped thing, and gently touched the human's neck.

Mattia flinched in his sleep, but didn't wake up. The drugs he had just been injected would prevent him from fully waking up for the next hours.

Another creature, a bigger one, silently creeped into the room with the same agility of a liquid, and pulled out a small pod that started inflating. Once it was big enough, both aliens picked up Mattia and put him inside the floating pod, careful enough not to hurt him.

Afterwards, they headed back to the balcony. Five hundreds meters above, their spaceship was waiting for them.

Another sudden white flash of light, and the two of them - plus the pod containing Mattia - had vanished.

------

Mattia was woken up by the daylight and the chirping of birds. He was lying down, supine, in an incredibly uncomfortable environment. His back was pressing against a hard, irregular surface, and something spiky would occasionally brush against his skin.

His body was numb and sore. Not like when you get up from your sleep. Rather, he felt like he had just recovered from a severe illness, with the aftermath of some tremendous physical pain.

As he opened his eyes, he realized he was facing the blue sky. He was surrounded and deeply buried in a field of golden grass, maybe barley.

'Where the fuck am I?', he thought. His head hurt so much. His back, maybe even more.

What had happened? The last thing he could remember was going to bed.

Or maybe...

He could faintly hear some weird noise, maybe a voice or two, or maybe some animal's calls. And he faintly remembered some cold material, maybe a metallic thing, touching his head. And then... An acute pain.

But no, it was a dream. It didn't feel real at all.

Mattia shivered. 

He closed his eyes again, tighter, to get rid of the pain.

'Is this some fucking prank? A dream?'

He opened his eyes again. No, the sky was still there. And he soon realized that the barley spikes brushing against his skin meant he was naked, too. What was going on?

His head still throbbing, Mattia tried to get up. He pressed his hands into the ground, and pushed his torso forward. His body was numb and heavy, but he managed to do it with extra effort.

His eyesight, however, was now blurry.

Some seconds passed before he could see his surroundings one again. Shapes started forming before his eyes.

The golden barley, the blue sky, the brown soil. And, then, his legs. His hairy, thick and burly legs...

'Wait.'

"WHAT THE FUCK?!", Mattia burst out in a grave, exploding voice that startled even himself. Too panicked to pay attention to his sickness, the young man instinctively brought a hand to his mouth. Instead of his hairless, shaven face, his hand met a short, spiky beard.

Mattia rubbed his whole face in confusion. It didn't feel like his own face. It was... Different. His hand moved towards his head. His hair was much shorter than before, too.

In the meantime, his gaze was now investigating what had happened to the rest of his body.

His huge, beefy thighs spread, revealing a meaty and large cock. His lean, cut abs were long gone, replaced by a bulky musclegut, covered in a thin layer of blonde hair.

Above it, a pair of bulging pecs, as hairy as his gut, stuck out where, just the day before, a plain and hairless chest stood. Mattia firmly grabbed a pec and tightly squeezed it. He could feel it. It belonged to him, no doubt.

Even his hands were much larger than the hands he was used to. They were so rough. And his new arms, well... Bloated in muscle fibers. Gone were his thin arms, now enveloped in round, squishy biceps and sculpted triceps.

He had never seen someone so big as he was now in real life. He looked like one of those bulking athletes he would occasionally see on Instagram.

Mattia smacked both his large hands on his forehead. "WHAT THE FUCK IS GOING ON?", he thundered, almost in tears.

His breathing was fast, and his head was spinning.

He was trying his best to stay calm, but he couldn't. He didn't know what to do, where he was, who he was.

One thing was sure: he couldn't sit there without doing anything.

He tried to get up.

He curled up, and then pushed himself up with all the strength he had in those muscular, sore legs. With great effort, he was standing in the middle of the barley field.

He stretched, and every muscle of his body hardened and twitched.

Then, he looked down.

"Woah", was all Mattia could say. He could now see his new, huge physique in all its might. His thick legs, his monstrous cock, his bulging torso partially hiding what was beneath. He couldn't resist the urge to run his large, hairy hands on all that bonanza, lingering on his meaty dick. Then, he tried to strike a pose, just to observe all his overdeveloped muscles squeezing.

"T-this is...", Mattia couldn't finish the sentence. His voice, now deep and grave, almost authoritarian, didn't match at all his insecure tone.

He was starting to feel a bit horny, and his cock was slowly hardening and inflating. But, as much as he liked his new appearance, he was still shocked and somehow scared, and his worries were directed towards his next move.

The young man - now, more like a fully grown adult - looked around.

In the very distance, he could catch a glimpse of a small town. A couple farmhouses, a yellow bell tower, some rural buildings. He had no idea where he was, but that was his only possible destination, so he finally set off.

He took his first step. It was hard for him to balance his new weight, probably more than doubled in such a short time, and his new height, consiserably increased. However, in the end, he was finally able to manage the new physics he was subjected to.

"What the fuck is going on?", Mattia whispered - or rather tried to, as his voice was now too deep and roaring - as he observed in awe his brawny limbs responding to his will. Had he grown overnight? Was he inside someone else's body? And, most importantly, how did that happen?

All these thoughts crowded Mattia's mind, but it was hard for him to focus while being in that body. Every step he took, he could feel his large cock, half hardened, wobbling and smashing violently against his hypertrophic quadriceps, like a solid, heavy clock pendulum. Barley spikes would brush and stick to it, to his bulky legs and to his round butt. He had to sweep away all the spikes from his buttocks every now and then, and every time he did so, he couldn't help but sink his strong fingers in his squishy glutes, making his dick harder and harder in pleasure.

The body he was currently in was the kind of body he had always been attracted to. If he hadn't been too shocked, he would've probably stopped right there and jerked off without hesitation. However,  he had to fight that instinct.

----

It took Mattia about half an hour to get to the town he had seen.

He tried his best to cover his dick and his ass before entering the town, but, needless to say, they were both too much to handle.

As soon as he came across the first locals, a straight couple about his age - his original age -, he started asking for help.

Their reaction was quite strange indeed. They didn't scream, nor called the police. They just kept staring at him with a very confused expression.

"Please, I don't know what to do, I don't remember what happened, I only know I went to bed yesterday night and I got up here", Mattia tried to explain, running out of his breath.

A couple other people, in the meantime, had gathered around him, and was now staring at him with the same confused, almost surprised face.

Against all odds, the people helped him.

They really didn't talk to him much, as they looked much more shocked than he was, even though he really couldn't understand why.

Mattia was offered some clothes - too small and tight for him, of course, but better than nothing. He wanted so bad to call his family to tell them he was okay, but he knew they wouldn't recognize him. Fuck, he couldn't even recognize himself.

The young girl he had first met called the police. She got a little far from him, but he could faintly hear what she said.

"We found a man, he says he just woke up in the fields and... he says he can't remember what happened, and... He's... It's... "

Mattia couldn't hear the rest.

In less than thirty minutes, agents in black and green uniforms came.

While most of them asked questions to the locals, Mattia was gently led to a black car and taken away.

----

It was a shock for Mattia to learn that he was now inside Tommaso Colombo's body. The hot model and rugby player had mysteriously disappeared about a month before from his apartment, in Trento. While rugby isn't exactly a popular sport in Italy, the news had soon spread all over the country due to the strange circumstances of the event. His security cameras had showed weird, circular interferences the night he had disappeared. Some conspirationist thought about aliens, some sceptic was sure it was just some video editing. In any case, nobody had seen him from that moment... Well, until now.

Luckily, the agents of the military Italian Department for the Strange and Anomalous had managed to cover up what had happened to Mattia. Nobody else except five or six people in a small town close to Lucca knew about it. And, luckily, they had accepted to shut up without asking for money.

The Department took care of Mattia's situation with great professionalism. They called his parents and explained the situation. Naturally, his parents didn't believe them at first. However, once they visited the Department headquarters, Mattia's memories and attitude finally convinced them - not easily - that the big blonde hunk they were looking at was their actual son. In the end, they brought him back home, and learnt to deal with having a beefy rugby player as a son.

As for Mattia, well, he didn't feel bad at all for the change. Sure, he had to adjust to his new identity - he was now legally Tommaso Colombo - and his new age. Everything for him was now different. But, except for those little things, everything was better.

Being a grown-up, he could finally move from his parents' house. He started working as a model, and his days only consisted of photoshots and gym. And, of course, picking guys up was now easier than ever.

Not that he needed other guys, of course. The body he was in was enough for him to have fun. He could jerk off by just literally watching himself posing in the mirror, or by touching his own body. Tight, revealing clothes became his favourite. Not because he wanted to be liked, but because he found himself hot.

Basically, the life he had always dreamt of was now his.

----

The aliens had followed everything.

They were astounded.

The procedure had worked, even though not as they had planned.

They hadn't exactly managed to revive the dead  Human Subject #953. Not in a traditional way, at least. His consciousness and memories weren't restored.

However, they probably had done something much better and interesting. If it worked for their species as well, the applications would be endless.

The tallest alien, the doctor that had performed the procedure, looked over the pod where the body of Human Subject #1003, the so-called "Mattia", was stored.

They definitely needed to replicate the experiment.

The Contract

A man was angrily stomping his heavy feet alongside the swimming pool, his undersized flip-flops regularly making a funny noise which somehow mitigated his intimidating appearance. He was, to say the least, huge. His body was swelling with muscles - strong, veiny arms, sculpted legs, and a couple of solid pecs protruding over a bulging musclegut. His face was not overly mature, but his big, although tidy, beard did make him look some sort of modern-day, fierce viking. However, just like his flip-flops, the tight briefs he was wearing did not seem to fit his frame entirely, largely exposing and highlighting his muscles.

As you may imagine, such a muscle beast did not go unnoticed. Everyone who was chilling by the pool couldn't help but stare at him, either attracted by him, jealous of him or simply despising his evident thirst for attention. What they didn't know, however, was that he was all but happy for all the stares he was receiving. Despite his striking appearance, he was trying so hard to ignore every single person who was looking at him, progressively walking faster.

The muscle beast finally stopped, menacingly towering over a group of young men around their early twenties. His eyes were locked on who seemed to be the boss of the little group, who had followed the big man's movements with a grin depicted on his face the entire time.

"What's with that look, sir? Something's wrong?", the young one asked. His group was giggling and whispering, not trying too hard to hide their comments about how ridiculous the man looked in his undersized swimming gear.

"We need to talk."

More giggling and whispering. The young boss defiantly looked at him for a few seconds before getting up with a sigh. "I'll be right back", he announced.

The man and the lad headed towards a quiet place, not so far from the pool. The big man looked around to make sure nobody could hear them. He was looking at the young one with a furious expression. "Seriously, man? I was with my family when I started changing! It's not fair!"

The younger one didn't seem to mind the scolding that much. Actually, even though the huge man was towering over him with a ferocious attitude, he didn't even seem to be bothered in the slightest. "Not fair? You signed a contract, kid". As he said so, a sheet of paper materialised in his hand.

"I know! But I'm fed up with your old body and your life. You said you'd only take my body for a couple hours at most, and you'd make sure I didn't need it to-"

"I don't remember saying that."

"You're a liar, you did!", the big man whined back, his deep, manly voice distorted into an unfitting lament.

The lad smirked and quickly read what was written on the sheet. "Even if I did, what's important is what's written on the contract you signed. And there's no mention about any kind of limitation for the swap. Ergo, I can take your body whenever I want. I couldn't give a fuck if your little family sees you transforming into a beast of a man."

The older man's face turned red in anger. "That's not what you said! You little-" he violently grabbed his former body, just to be repelled by a burning sensation.

A glimpse of malice flashed in the wizard's eyes, and his now young, attractive smile cracked. "Don't you dare to touch me, kid. I make the rules, and I can change them whenever I want." He was getting dangerously close to the stud, pushing him back towards the wall. They were facing one another, and their noses were mere inches apart. It was quite a paradoxical situation, as the much smaller, apparently armless kid was fiercely towering over that brawny beast of a man. "I could also decide to keep your body forever, and you could do nothing to stop me. Got it?"

The man gulped, and the young one seemed to enjoy it, as an amused smirk came back to his face. "Your friends seem to enjoy my personality more, too. They're wondering why you got so funny all of a sudden, you know? Besides", he ran his hand over the man's bulging abs, "everyone would like to be in your shoes right now. I know, maybe a little... too much. But, for a gay fellow like you, such a body is a blessing."

"H-how do you...", The stud stuttered.

"I'm not an idiot, kid. I could see it from the way you looked at me". The young guy suddenly grabbed the man's crotch. In response, the hunk startled, trying to hide his pleasure. It was no use: his dick was already fattening up, and his tight briefs left nothing to imagination.

"Bu-but... "

"No buts, kid", the wizard whispered in a seducing tone. "I know being older is boring and sucks, but... try to make good use of it, as long as you're in that enviable body. Look at you. You're a sexy, strong daddy. You can do whatever you want. You're free now, and with a spectacular body." The older man gulped as the wizard let him free and stepped back. "Now, go."

The muscular giant moved, heading back to the swimming pool. Before disappearing, he stopped and turned back towards his former body. "When will I have my body back?"

The wizard shrugged. "Erm... I'll need it until tonight, at least. And maybe tomorrow, too. I don't know if the guys are planning something for the next few days. Don't worry though, I'll give it back to you as your holiday ends."

The bulky stud hesitated for a few seconds. He then grunted and clumsily moved on, his undersized briefs hardly hiding his thick boner, and his large feet crushing his unfitting flip-flops.

"...if I feel like it", the wizard added in a whisper, a wide sneer on his face.